QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

9 km NNW of Okarche, Oklahoma

· 6.0 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kingfisher County 18 kmCanadian County 29 kmBlaine County 37 kmLogan County 53 kmOklahoma County 62 kmGarfield County 67 kmMajor County 73 kmCaddo County 78 kmGrady County 88 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.5 (ml)
Depth
6.0 km below the surface
Felt
no reports yet
Nearest
Kingfisher County, 18 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1138 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 35.8040, -98.0268. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kingfisher County, OK 18 km (11 mi) SSW of here earthquakes near Kingfisher County
Canadian County, OK 29 km (18 mi) N of here earthquakes near Canadian County
Blaine County, OK 37 km (23 mi) ESE of here earthquakes near Blaine County
Logan County, OK 53 km (33 mi) WSW of here earthquakes near Logan County
Oklahoma County, OK 62 km (39 mi) WNW of here earthquakes near Oklahoma County
Garfield County, OK 67 km (42 mi) SSW of here earthquakes near Garfield County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

59 earthquakes have been recorded within 50 km since this one.

  1. 1.7 12 km ESE of Dover, Oklahoma
  2. 1.8 4 km NNE of Okeene, Oklahoma
  3. 1.7 6 km NNE of Calumet, Oklahoma
  4. 1.6 5 km NE of Calumet, Oklahoma
  5. 1.6 5 km NNE of Calumet, Oklahoma
  6. 1.7 4 km NNE of Calumet, Oklahoma
  7. 1.6 5 km NNE of Calumet, Oklahoma
  8. 1.8 4 km NNE of Calumet, Oklahoma
  9. 1.6 4 km NNE of Calumet, Oklahoma
  10. 1.8 5 km SSE of Dover, Oklahoma
  11. 2.8 5 km SSE of Dover, Oklahoma
  12. 1.7 5 km NNE of Calumet, Oklahoma
  13. 1.6 5 km NNE of Calumet, Oklahoma
  14. 2.0 6 km NNE of Calumet, Oklahoma
  15. 1.8 5 km N of Calumet, Oklahoma

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 4.2 on 2016-03-29 — it released about 11,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.